Redline blended lightweight masonry is a successful time-tested product which is identified by a visible red stripe running vertically on the end of the block. This distinctive feature allows quick confirmation that the product being used in the wall is, indeed, the fire-rated product specified. Echelon Redline CMUs have an average weight of 28 pounds per 8x8x16 unit. It combines the insulation and productivity advantages of lightweight concrete with the strength of standard masonry units. Redline also offers advantages in reduced chipping, consistent color and texture with a smooth surface that requires less painting for an even topcoat.